Door stop



FIG. 1 is a front perspective view of a door stop showing my new design;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a right side perspective view thereof;

FIG. 4 is an additional right side perspective view thereof; and,

FIG. 5 is a rear perspective view thereof.

CLAIM The ornamental design for a door stop, as shown and described.